Imagine a world where you could run both Linux and Apple operating systems on the same high-performance Mac laptop. That day may be coming sooner than Mac fans think. Red Hat has confirmed it is pursuing the development of a Linux distribution for the new Intel-based Macs. Red Hat is no stranger to Macintosh - Fedora and other Linux distributions support the PowerPC architecture once used by Apple - but there are challenges to bringing Linux to the MacBook Pro. It appears the opportunities outweigh the challenges, though, with potential repercussions for Microsoft if the market clamors for Red Hat Linux-enabled MacBook Pros.

You're probably right. Given that many Mac users say they love Macs because 'it just works', I'm not sure how many of them would have an interest in Linux.
On the other hand, people looking to jump ship from Windows will probably head for Linux as their first alternative, because that option is cheaper when you can run the OS on hardware you already have.